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Finding the Fourth Proportional to 207,249.15, 310,828.77 and 74,138.61

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Solution

The fourth proportional to 207,249.15, 310,828.77 and 74,138.61 is: 111,191.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,249.15 : 310,828.77 = 74,138.61 : x
  2. Step 2: Convert to fraction form
    207,249.15/310,828.77 = 74,138.61/x
  3. Step 3: Cross multiply
    207,249.15x = 310,828.77 × 74,138.61
  4. Step 4: Simplify right side
    207,249.15x = 23,044,412,955.81
  5. Step 5: Solve for x
    x = 23,044,412,955.81/207,249.15
  6. Step 6: Final answer
    x = 111,191.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.